51388814 has 8 divisors (see below), whose sum is σ = 77113848. Its totient is φ = 25684200.

The previous prime is 51388781. The next prime is 51388817. The reversal of 51388814 is 41888315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51388817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6164 + ... + 11864.

It is an arithmetic number, because the mean of its divisors is an integer number (9639231).

Almost surely, 2^51388814 is an apocalyptic number.

51388814 is a deficient number, since it is larger than the sum of its proper divisors (25725034).

51388814 is a wasteful number, since it uses less digits than its factorization.

51388814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10210.

The product of its digits is 30720, while the sum is 38.

The square root of 51388814 is about 7168.5991658064. The cubic root of 51388814 is about 371.7830034796.

The spelling of 51388814 in words is "fifty-one million, three hundred eighty-eight thousand, eight hundred fourteen".